The features

In general Web Essentials makes working with CSS in Visual Studio more nice, adding features like colour and font preview, change of values using Ctrl+Arrows (up=add, down=subtract as you know it from for instance Firebug and Google Chrome), option to base64 encode images and speed typing. I can only recommend this plug-in, and also the fact that Mads listens to you request given to him for instance through twitter makes me a happy user! Well done Mads, and keep up the good job!

Links

Zen coding plug-in – You should also read that post if you want to speed up your work in general in Visual Studio

Web Essentials – find the plug-in here and read about all the features in it